TLS Online TPP Program

#Question id: 41055


Q. In the constitutive equation for heat conduction, 𝑱𝒒=−𝒌𝜵𝑻, what is the physical significance of the negative sign?

#Unit 12. Biochemical Engineering
  1. It indicates that the thermal conductivity (𝒌) of the material is a negative value.
  2. It signifies that heat flows spontaneously from a region of low temperature to a region of high temperature.
  3. It demonstrates that heat flux is inversely proportional to the temperature gradient.
  4. It indicates that heat flows down the temperature gradient, moving from a region of high temperature to low temperature.